| M2194 | Unspecified acquired deformity of hand |
| M21941 | Unspecified acquired deformity of hand, right hand |
| M21942 | Unspecified acquired deformity of hand, left hand |
| M21949 | Unspecified acquired deformity of hand, unspecified hand |
| M2195 | Unspecified acquired deformity of thigh |
| M21951 | Unspecified acquired deformity of right thigh |
| M21952 | Unspecified acquired deformity of left thigh |
| M21959 | Unspecified acquired deformity of unspecified thigh |
| M2196 | Unspecified acquired deformity of lower leg |
| M21961 | Unspecified acquired deformity of right lower leg |
| M21962 | Unspecified acquired deformity of left lower leg |
| M21969 | Unspecified acquired deformity of unspecified lower leg |
| M22 | Disorder of patella |
| M220 | Recurrent dislocation of patella |
| M2200 | Recurrent dislocation of patella, unspecified knee |
| M2201 | Recurrent dislocation of patella, right knee |
| M2202 | Recurrent dislocation of patella, left knee |
| M221 | Recurrent subluxation of patella |
| M2210 | Recurrent subluxation of patella, unspecified knee |
| M2211 | Recurrent subluxation of patella, right knee |
| M2212 | Recurrent subluxation of patella, left knee |
| M222 | Patellofemoral disorders |
| M222X | Patellofemoral disorders |
| M222X1 | Patellofemoral disorders, right knee |
| M222X2 | Patellofemoral disorders, left knee |
| M222X9 | Patellofemoral disorders, unspecified knee |
| M223 | Other derangements of patella |
| M223X | Other derangements of patella |
| M223X1 | Other derangements of patella, right knee |
| M223X2 | Other derangements of patella, left knee |
| M223X9 | Other derangements of patella, unspecified knee |
| M224 | Chondromalacia patellae |
| M2240 | Chondromalacia patellae, unspecified knee |
| M2241 | Chondromalacia patellae, right knee |
| M2242 | Chondromalacia patellae, left knee |
| M228 | Other disorders of patella |
| M228X | Other disorders of patella |
| M228X1 | Other disorders of patella, right knee |
| M228X2 | Other disorders of patella, left knee |
| M228X9 | Other disorders of patella, unspecified knee |
| M229 | Unspecified disorder of patella |
| M2290 | Unspecified disorder of patella, unspecified knee |
| M2291 | Unspecified disorder of patella, right knee |
| M2292 | Unspecified disorder of patella, left knee |
| M23 | Internal derangement of knee |
| M230 | Cystic meniscus |
| M2300 | Cystic meniscus, unspecified meniscus |
| M23000 | Cystic meniscus, unspecified lateral meniscus, right knee |
| M23001 | Cystic meniscus, unspecified lateral meniscus, left knee |
| M23002 | Cystic meniscus, unspecified lateral meniscus, unspecified knee |